Injection device



FIG. 1 is a perspective view of an injection device showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a view on the left side thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front end view thereof; and,

FIG. 6 is a rear end view thereof. 

The ornamental design for an injection device, as shown. 